Doug is confused how iTunes works with backups. What is the "other" section of his iPad? Leo says that "other" in his iPad is cache files and other stuff that can't be deleted unless he does a restore. The trouble is that a lot of stuff gets saved there and it can build up over time. Leo recommends backing up his device, then erasing it and restoring it. It will then remove all those temp files. This is really the only way to do it.